(19)

(11)

EP 4 085 352 A1

(12)

(43) Date of publication: 09.11.2022 Bulletin 2022/45 (21) Application number: 20817136.3 (22) Date of filing: 06.11.2020

(51) International Patent Classification (IPC):  G06F 16/9535(2019.01) H04L 29/08(2006.01) G06F 16/9536(2019.01) H04W 4/02(2018.01) (52) Cooperative Patent Classification (CPC): G06F 16/9535; G06F 16/9536; H04L 67/30; H04N 21/4751; H04L 67/125; H04L 67/52; H04L 67/535; H04L 67/55 (86) International application number: PCT/US2020/059256 (87) International publication number: WO 2021/137939 (08.07.2021 Gazette 2021/27)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 30.12.2019 US 201916730585 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)	(72) Inventors: UDIPI, Rahul Anantha Padmanabha Redmond, Washington 98052-6399 (US) WHEELER, Maxon Reave Redmond, Washington 98052-6399 (US) YU, Christopher Redmond, Washington 98052-6399 (US) (74) Representative: Martinez, Olivier Gildas et al Page White & Farrer Limited Bedford House 21A John Street London WC1N 2BF London WC1N 2BF (GB)